Multi-layer System-on-Substrate for Ka-band Foreign Object Debris (FOD) Detection Sensor
نویسندگان
چکیده
Presence of Foreign object debris (FOD) at airport runways is an immense threat to flight safety. Such objects may cause potential damage to the aircraft especially during the take off and landing. This paper introduces the design of a low-cost Ka-band FOD radar sensor adopting state-of-the-art system-on-substrate (SoS) approach. Contrary to the reported single-layer SoS design approach, multi-layer SoS configuration is introduced. The frequency modulated continuous-wave (FMCW) front-end transceiver and the integrated transmit and receive antennas are realized in multi-layer configuration. The front-end transceiver is mainly designed employing substrate integrated waveguide (SIW) circuits on low-cost 12 mil thick R4003C substrate. The front-end transceiver comprises of MMICs and passive structures such as SIW band-pass filters, SIW Wilkinson power divider and SIW-to-microstrip transitions. The antenna is of SIW traveling-wave slot array (TWSA) type realized on 60 mil thick R4003C. Unlike conventional coaxial matched loads used in SIWTWSA, a virtually grounded resistive matched load is introduced for termination of such antenna in SIW technology. The simulation results of the proposed antenna and transceiver front-end are presented. Key-Words: Foreign object debris, system-on-substrate, substrate integrated waveguide, frequency modulated continuous-wave, slot array antenna
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